题目的意思是寻找上一题答案的证据。上一题的正确答案是C,both genders of Manduca sexta make comparable uses of information provided by variations in ambient CO2,对应line 24-28的 in this species, CO2 information could be similarly important for both males and females。B选项:line 28-31提及功能的问题,没有提及性别,不符合。C选项:line 31-32,和moth对比,不符合。D选项:line 33-37,作者的假设关于LPO的用途,不符合。